I installed this extension: https://addons.mozilla.org/en-US/firefox/addon/2024
which gave me the option to display it in my Yahoo toolbar. Apparently, that didn't work. I uninstalled it, & removed any remaining associated files that I could find within the mozilla/firefox directories. But when I reinstalled it in an attempt to get it back to normal, all my prefs were still there even though I deleted the associated files. So, I must have missed something.... but what? Is there more than one directory that extensions are stored in? Any help would be appreciated!